Study on Removal of Phosphorus from Domestic Wastewater by Modified Fly Ash

Abstract:

To prevent eutrophication and to treat domestic wastewater effectively, the experiment of removing phosphorus from domestic wastewater was carried out using modified fly ash as an absorbent. The effects of fly ash particle diameter, fly ash dosing quantity, pH value, temperature, oscillating strength and adsorption time on phosphorus removal were studied. The results showed that when the fly ash size ranged from 160 mesh to 200 mesh, the fly ash dosing quantity was 25g/L, pH value was 3.5, the temperature was 50°C, the concentration of phosphorus in the domestic wastewater was 6.0 mg/L, the oscillating strength was 140r/min, and the adsorption time was 120 minutes, the removal efficiency of phosphorus could reach 94.5% and the concentration of phosphorus could reduce to under 0.5 mg/L.

• Periodical: Advanced Materials Research (Volumes 396-398)
• Pages: 2294-2299
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.396-398.2294
• Online since: November 2011
• Authors: Rui Gang Wang
• Keywords: Domestic Wastewater Containing Phosphorus, Fly Ash (FA), Removal Rate

References

[1] Jinxin Peng, Huijun chen，"Water quality eutrophication and prevention", Beijing, China Environmental Science Press, 1988.

[2] Cunxian Yan，"The comprehensive utilization of fly ash"，Shanghai Environmental Science, Vol.15, 30-33, 1996.

[3] BAYAT B，"Comparative study of adsorption properties of Turkish fly ashes"，Journal of Hazardous Materials, Vol.95, 275-289, 2002.

DOI: 10.1016/s0304-3894(02)00141-3

[4] Wenxiang Xiao,"Modified fly ash for removal of phosphorus from wastewater ", Technology & Development of Chemical Industry, Vol.33, 42-44, 2004.